Built to handle demanding fault currents, this 35A, 3-pole MCCB delivers robust protection for commercial facilities. The Siemens BQ3B035H operates on 240VAC systems requiring high-capacity defense. The bolt-on mounting style ensures a solid connection within Siemens P1 panelboards and older ITE distribution panels. It can also replace QBHW3035 and QOB335VH units. With an upgraded 22kAIC interrupting rating, this high-capacity breaker offers superior safety margins.
Which panelboards are compatible with the Siemens BQ3B035H?
This bolt-on breaker is designed for installation in Siemens P1 lighting panelboards and legacy ITE distribution panels that accept BQ-frame breakers. It is not compatible with standard residential plug-on load centers.
What does the H suffix mean in the BQ3B035H catalog number?
The H indicates that this is a high-interrupting capacity breaker (Type BQH). It provides a 22kAIC rating at 240VAC, which offers a higher fault-current defense than standard 10kAIC BQ breakers.
What wire gauges are supported by the BQ3B035H terminals?
The factory-installed lugs accept 14-6 AWG copper (Cu) or 12-6 AWG aluminum (Al) wire. Ensure the wire gauge matches the 35A circuit requirement and is torqued to the specifications printed on the breaker label.
Can the Siemens BQ3B035H replace older ITE breakers?
Yes, the Siemens BQ3B035H is the direct, UL-listed replacement for legacy ITE BQ3B035H breakers. Siemens acquired ITE and retained the exact BQ frame dimensions and bolt-on mounting style.
How is the BQ3B035H secured inside the panel?
It is a bolt-on breaker that fastens directly to the panelboard bus bar with screws. This creates a secure, vibration-resistant connection that is ideal for commercial and industrial applications.
What type of protection does the BQ3B035H provide?
It utilizes a fixed thermal-magnetic trip unit. The thermal component provides long-time protection against sustained overloads, while the magnetic component offers instantaneous tripping to quickly clear severe short circuits.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 73 reviews.
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Rated 4.9 out of 5 stars
Based on 73 reviews
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Reviews Summary
Generated by AI from 67 most recent customer reviews
Last updated 6/3/26
Customers say these breakers arrive quickly and fit perfectly for their electrical needs. Fast shipping and competitive pricing are frequently mentioned, with many users appreciating the availability of hard-to-find and older-style breakers. The products are well-packaged and arrive in good condition. Most customers report successful installations and reliable performance. A few note missing items from orders or concerns about product condition, though the majority express satisfaction with their purchases and indicate they would order again.